Heat-retaining system for engines.



W. J. HAGMAN.

HEAT RETAINING SYSTEM FOR ENGINES.

APPMGATION FILED 11u13, 1914.

1,128,133. N Patented Feb.9, 1915.

2 SHEETS-SHEET 1.

W. J. HAGMAN.

HEAT RBTAINING SYSTEM PoR ENGINES,

APPLICATION FILED FEB.13,1914. 1,128,133, Patented Feb.9, 1915.

2 SHEETS- SHEET 2.

N s@ .v

H. 1 4 v. `Av/ wmv UNTTED sTATEs PATENT oPEioE.

WILLIAM J. HAGMAN, OE PHILADELPHIA, PENNsYLviiNfIA., I

EAT-RETAINING SYSTEM Eon ENGINES. A

Application led February 13, 1914. Serial No.818,536 ara.,

T0 all lwhom it may concern Be it known that I, WILLIAM J. HAGMAN, a citizen of the United. States, residing in Philadelphia, Pennsylvania, have invented `certain Improvements in Heat- Retaining Systems for Engines, of which the following -is a specification.

One object of my invention is to pro? vide a combination of apparatus primarily arranged to store the hot liquid employed in the cooling system of an internal combustion engine, so that it shall be available for use in Warming such engine when i-t is again desired to put it into use after a more or less prolonged period of idleness.

I furtherdesire to provide a liquid storage system in connection with the .cooling system of an internal combustion engine,

-, together with means whereby the How of liquid vbetween the two systems may be conveniently controlled at will, the arrangement of parts being relatively simple, substantial and of such a natureas to require lbut a minimum of attention.

These objects and other advantageous ends'I securev aslhereinafter set forth, reference being Ahad to the accompanyingdrawings, in which Figure 1 is. 'an elevation, partly in section and to' some extent diagrammatic, showing my invention-as applied toan internal 4 combustion engine; Fig. .2 is a full size vvertical section illustrating the` detailf'construction of one of the Valves and its associated parts; Fig. 3 is a vertical section of another valve preferably forming part of the invention, and F ig.4 is a transverse section on the line a-fa Fig. 3. v

' In the above drawings, 1 and 1 represent the cylinders of an internal combustion engine, which is shown as mounted on a motor A-vehicle Whose body. is indicated at 2 and said. engine is provided with a radiatorv whose upper part is connected through a pipe 4 with the Water jackets 5. These lat- A ter'gare also connectedthrougha manifold; 6 .'with a pipe 7 leading to the Voutletof. Aa pump 8 .whose inlet l to the bottom ofthe radiator 3.1`If desired, .Y

I may-.connect the carbureter, indicatedv in dotted lines at n10,f.t o the` water system through pipes 11 and 19., of which .the first leadsfrom the-pipe 9 and the Second 1s connected into one of "the water jackets.A 5. In addition to the above apparatus,wh1ch Specification of Letters Patent.

ipe 9 is connected` lclosely fitting acavity'infsaidcasingn ein.

.to said reservoir. i Y.

constitutes a well. knownA form lof cooling heat conduction thereto, by mea-ns'lo'f pack-*gijA ing of any 'suitable insulating material i113', although, if desired, theA spacefbetweenthe walls of the reservoir 13 and those fof the" casing 14 may be hollow and exhausted of air in order to attain the same '-endf'ffImi mediatelyr adjacent the;y casing Maan'dfpref'- erably1 connected thereto, I rovide'iaftank 16 for-compressed air-,f..whic f'ma'y be con nected through a pipe".V 17l Atoffany suitableoj source of the same, suchgf'forfexamplefas" i a pump (not shoWn)."r-."Said casing 141With its tank is preferably,; thouglrz not necesf smily, located at some point beloW-z-therwa' ter jackets 5 and the-other liquidcontainq ing apparatus const-itiitingl-ltlie'cooling 55h314 tem of the engine, and its lowest portion connected to thepipe 7::thereof thrufghftlie pipe 18 including a. valve orcoc'kilgfpipferably of the detail Acstructicm'sliownfin' Fig. 3. T he movablenmember 19.11.50 thiks.;g()V valve, which is 'connectedfto-'a handler520,\ may be so adjusted as'jtov permit free-How of liquid between the twopartsloffthe'pipe 18 with which it is'connectedorlit iiay u be so turnedas to connectfthat part said` pipe leading to thefpipef'witha'ldi charge opening 21 in its-'casing Agar-Ri 'By unserewing the pliigg or by the .use ofa suitable wren this closely fittingendg??Z 'iriafbe y cover anv outlet 'openinggan escape of-air from `the reseivoif''hm' the passage 28 in the valve casing-23. On the other hand, if sufficiently screwed into the cavity of the casing, the end 27 of this down weather, the handle 20 of the cock 19 is so plug 26 completely cuts ofl` the outlet open# ing-29 and ultimately engages the stem of the valve 24 so as to unseat the same.

l-Vhen the engine to which my invention attached has been in operation for a more or less prolonged time, the water in its cool` ing system is heated to a considerable degree, and when said engine is to be shut for some time, particularly in cold turned as to establish communication between the two partsof the pipe 18 and thus permit the greater part of the liquid to pass into the reservoir 13,which, being ellectually insulated as above described, maintains it in -a hot condition .'with relatively little reduction in temperature` for Va prolonged period of time. After this discharge of liquid from the system, the handle 20 is so manipulated thatthe movable element offthe cock completely closes oil lcommunication with the reservoir-113, and puts the-body of'thepipe 18` in connection with the outlet port 21, thus permitting escape of that part of the ceoling liquid which still remains in said pipe.

While I have shown that pipe 7 as.entering the top of the pump 8, so that a smalll i 20 of the cock 19 is rst brought to a position lso in which communication isA established between the two 'parts ofthe pipe 18, and the air tank 16 being filled with air under pressure, the plug 26 is screwed inwardly` until by engagingthe stem 23 of the valve 24, it unseats the latter, thus allowing-air to flow into thereservoir 13 and forcing the still'- hot liquid therefrom back in the engine, radiator and ltheir connections. -At any time, and particularly in cold weather, the effect of this warm liquid is't'o heat-,the cylinders of the engine together with-'their asso- 4ciated parts, so that no trouble is experieration' would vbe enced in starting,

slggiidle even for a short time.. Y When all or a cient quantity` of` the liquid ihas been Y' forced out of the reservoir'l, the handle 20 of the 'cock 19 fis so turned as to again cutoff ,comlncatiQn/betwn the' malin. part ofA the reservoir,

start the engine.

where ordinarily` such opextremely difficult after the engine had been allowed to cool by standthe pipe 18 and the short section leading to after which the plug 26 may be unscrewed suiliciently to allow the valve 24 to seat.

While I preferably mount the reservoir 13 so'that the hot liquid from the engine cooling system will run into it by gravity, it is obvious that it may be placed on a level with or above the engine, without departing from my invention, suitable means being provided for causing the liquid to flow to and from the insulated storage reservoir. In any case, however, the work of starting the engine in cold weather is made relatively easy, since the'heat retained in the cooling water by the insulated reservoir is utilizedto warm the engine cylinders and other parts, so that no trouble is experienced in causing ignition and 'combustion' of fuel charges when said enginev is put into operation.' i

claim 1. The combination of an internalcombustion engine having a water jacket.; a radiator connected to said water jacket; a body of liquidin the radiator and water jacket for cooling the engine; an insulated reservoir connected .to receive4 hot liquid from both the radiator and engine when the i latter is shut down; and means for causing the liquid to return to the engine and radiator from the reservoir when 2. The combination of an internal combustion engine; a system of apparatus including a body of liquid lfor cooling said engine during its operation; means external to the engine for 'storing said liquid and preventing substantial loss of heat therefrom while the engine is shut down;-and means for thereafter returning said heated liquidto the engine and to the cooling sysl tem when it is desired to-start said engine.

l 3. The combination of an engine having a waterv jacket; a cooling .system connected to said water jacket; a` body of liquid in said system; an insulated reservoir connected to said cooling system; with means'in- 'cluding a source of a gas under pressure for controlling the-How of liquid between said reservoir and' the system at will.

it is desiredto vlos' 4. The combination of an engine having al water jacket; a radiator connected tliereto; a vbody of cooling liquid; means for'circulating said liquid through the engine and` radiator; 'an insulated reservoir connected .to receive liquid from the engine and radiator; an airrtank communicating with said reservoir; a valve for controlling the flow of air from the tank tothe reservoir; and a second valve for controlling the flow of liquid between the reservoir and the engine.

.- 5. 'I he combination of an engine having a water jacket; a cooling system; `a bodyl J`of liquid in said system; an insulated reser-` voir; a pipe connecting said reservoir with tree, e ae the cooling system; a valve in said pipe7 a gas containing tank connected to the reser- Voir; and means for establiehing` con. ,iunication between the reservoir and tia: atmosphere or between the reservoir and the gas tank. g

'6. The combination of an internal combustion engine; a system of apparatus including a body of liquid for cooling said. engine during its operation; means external t0 engine and cooling system for storing the said liquid and preventing sul'istantial loss of heat therefrom while the engine is shut down; and a source of power external to the engine, other than gravity, for forcing said liquid from 'ie engine and cooling system to the storage system.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses. i

YVILLIAM J HAGMAN.

Witnesses:

WVM. LOUGHRIDGE, DA'VID T4 NEVIN. 

